Shay, William A. creator text S.l.] Cengage Learning 2003 3rd ed. monographic 736 p. ; Thoroughly updated for currency, this book offers a clear presentation of data communications and network fundamentals. Featuring a wide array of applications, the book fully explains concepts and supports them with case studies or descriptions of specific software and other products. Students learn the protocols of analog and digital signals, data compression, data integrity, data security, local area networks, asynchronous transfer mode (ATM), and much more. The third edition includes important information on the latest developments of the Internet. Data transmission systems Computer Networks 0534383173 (hardcover) 9780534383176 (hardcover) http://www.amazon.com/exec/obidos/ASIN/0534383173/chopaconline-20 http://www.amazon.com/exec/obidos/ASIN/0534383173/chopaconline-20